To calculate the number of seconds in a century, we’ll follow a similar approach as before, but this time, we’ll convert both hours and minutes to seconds. Here’s how we can do it:

1. Determine the number of days in a century.
2. Calculate the number of leap years in the century.
3. Find the total number of days in the century.
4. Multiply the total number of days by 24 (hours per day), then by 60 (minutes per hour), and finally by 60 again (seconds per minute) to get the total number of seconds in a century.

Let’s perform the calculation to find out seconds in a century:

1. Number of leap years in a century:

• Number of leap years =⌊ 2000/4⌋ −⌊1900/4⌋=25−23=2
• Total number of days in a century:
• Number of days=100×365+2=36500+2=36502 days
• Total number of seconds in a century:
• Number of seconds=36502×24×60×60=3,153,600,000 seconds

So, there are 3,153,600,000 seconds in a century.

Important information:

• A century consists of 100 years.
• Each year typically has 365 days, but every fourth year is a leap year, which has 366 days.
• Leap years are necessary to keep our calendar in alignment with the Earth’s revolutions around the Sun.
• The concept of leap years was introduced by Julius Caesar and refined by Pope Gregory XIII with the Gregorian calendar.